Mohamed Lahouaiej Bouhlel, 31, plowed a 20-ton truck into crowds on the Promenade des Anglais seafront in Nice during a fireworks celebration on Bastille Day, France's key national holiday. Ten children were among the victims. More than 200 people were injured.

The attack ended when police shot into the truck, killing Bouhlel, authorities said.

ISIS' media group, Amaq Agency, claimed a "soldier" of the terror organization carried out the attack. But there was no sign Bouhlel had direct contact with the terror network, Paris prosecutor Francois Molins said last month.